Safety razor



' July 7, 1936.

c. c. LARSEN 2,046,470

SAFETY RAZOR Filed Jan. 23, 1935 Carl hris'hcm LOYSQH N VENTOE,

v'w ATTIV.

Patented July 7, 1936 S AFETY RAZOR Carl Christian Larsen, Copenhagen, Demnark Application January 23, 1935, Serial No. 3,059

' In Dennia'rk February 20, 1934 7 Claims.

The invention relates to safety razors and more particular to a new and improved safety razor of the kind, by which the blade-holder and the handle are adapted to slide in the protecting head and are interconnected mechanically, in such amanner that the blade-holder will move at right angles to the cutting direction of the blade; when the handle is displaced therein. The object ofthe invention is to enable this principle tobe utilized in connection with double-edged razor blades, in such a manner that the bladeholder will move in the desired manner, whether therazor be moved in one or the other direction. A further'object of the invention is to provide a razor of the kind mentioned above, which in the main has the same external shape as an ordinary safety razor and, consequently, can be used in the same manner as the latter, and in which the ordinary razor blades on the market can be used. According to the invention, the further advantage is attained, that the razor blade can be bowed in the apparatus in the same manner as in ordinary apparatuses with a fixed head, and that the clamping of the blade can be performed in the 'sarne'inanner as otherwisaviz. by a rotation of the handle.

' According to the invention, the said advantages are attained in that the handle, which is perpendicular to'the blade-holder, is firmly connectedfat the end facing the blade holder, to a sliding block adapted toslide in the protecting ataxia right angles to the'edges of the blade, thegu'ides for the blade-holder being situated in a'plane parallel to the direction of motion of the'sliding block.

"The sliding block and the blade-holder are interconnected by means of motions-transmitting connecting members adapted to eifect the above mentioned transmission, to the 'blade' -hclder, of the motion of the handle. The sliding block and the blade-holder may for instance be connected by means of a pin-jand-slot connection. Thus the sliding block may be fitted witha pin engagin an angular'slo't in a plate firmly "connected to the blade-holder, orthe sliding block may be such a plate with an pg m rsnt, in which a pin on the blade h older is engaging. The sliding block may be movably connected to one end of a bell-crank lever pivoted to the protecting head and connected tothe blade-holder by means of a pin-and-slot connection.

The drawing shows two constructions of the invention.

Fig. 1 shows one construction in side elevation,

Fig. 2 a section along the line 11-11 in Fig. 1,

Fig. 3 a'plate connected to the blade-holder, viewed from the bottom,

Fig.4 a'section of the other construction corresponding to Fig. 2,

Fig. 5 a side elevation of the blade-holder to a larger scale, and

Fig. 6 is a substantially longitudinal sectional view taken on lines 6-6 of Fig. 2.

The apparatus consists of a protecting head I, which is fitted with guides 2 running parallel to the edges of the blade and engaging the corresponding grooves 3 in the blade-holder 4, and with guides 5 which are running perpendicular to the blade edges, and along which a sliding block 6 can move back and. forth. The guides 2 and 5 are situated in parallel planes. The sliding block 6 is connected to a handle 1 extending at right angles to the blade-holder. The sliding block 6 is maintained in its central position in the protecting head I by means of helical springs 8 encircling the supporting rods 9, which are fixed in the protecting head, and the said springs press with their ends against two wire loops l9 and II, which for instance encircle the sliding block, in such a manner that the springs 8 will be compressed, whether the sliding block be moved to the right or to the left in Fig. 2, relatively to the protecting head I. At its free end, the handle is fitted with a finger knob 12, which by means of an annular spring 13 can be maintained in two difierent positions, relatively to the handle. The knob I2 is connected to a square rod M, which passes through the entire handle, and the free end of which, when the knob I2 has been pushed inward as far as possible on the handle, can engage a corresponding square recess l5 provided in a nut I6 in. the blade-holder 4 and acting as a coupling half. The nut I6 is fitted with a flange ll, by means of which it rests against the bottom side of the blade-holder 4, into which it extends with a cylindrical projection l3, which'is free to move in a corresponding hole in the blade-holder 4. The nut is is held in position by a plate 20 attached to the blade holder by means of distance screws l9 and fitted with a hole 2! for the cylindrical part of the nut l6 projecting below the flange H, and an angular slot 22 in which a pin 23 on the sliding block 6 is engaging. The cylindrical projection IB is fitted with inside threads 24 adapted to be screwed on to a corresponding pin 25 on the pressing plate 26 of the blade-holder.

In the modified construction shown in Fig. 4, the sliding block 6 and the blade-holder 4 are interconnected by means of a bell-crank lever 21 V pivoted to the protecting head and fitted with a pin 28, which engages a not shown slot in the blade-holder or a plate connected thereto.

The apparatus acts in such a manner that the rod M can be moved upward into the nut I5 when the knob I2 is pushed into the handle 1. I When now the knob I2 is twisted on the handle I, the nut l6 will rotate, so that the pressing plate will thereby be loosened. Then a razor blade may be inserted, in the usual manner, between the pressing plate 26 and the blade-holder 4, which parts are then clamped together by the knob being turned as before, but in the opposite direction. When subsequently the knob 12 is pulled outward from the handle, the rod I 4 is withdrawn from engagement with the nut I 6.

When the apparatus is in use for shaving, the protecting head i rests against the skin. When therefore the apparatus is moved forward, the handle will be displaced relatively to the protecting head i, which will be held back to some extent.

In the construction shown in Fig. 2, the pin 23 will thereby move in the angular slot 22 and move the blade-holder sideways, while the construction shown in Fig. l the sliding block 6 will cause the bell-crank lever 21 to perform a swinging motion by which the said lever by means of the pin 28 will impart a corresponding motion to thelbladeholder. After each stroke, the springs 8 will return the sliding block to the central position.

The pin 23 may equally as well be provided on the blade-holder 4 and the slot 22 in the sliding block 6, without the operation of the apparatus being thereby altered. In a corresponding manner, the pin 28 may be fixed to the blade-holder, while the bell-crank lever 21 may be fitted with a slot engaged by the said pin.

I claim:

1. A safety razor comprising a protecting head provided with a rectilinear guide for a bladeholder parallel to the cutting edges and a rectilinear guide for a sliding block perpendicular to the first named guide, an abutment plate and a corresponding clamping plate forming a bladeholder for a two-edged razor blade, and a sliding block being adapted to move sideways in said guides, a handle rigidly connected to said sliding block and means for transferring a movement of the sliding block in its guide to a movement of the blade-holder in its guide.

2. A safety razor comprising a protecting head provided with a rectilinear guide for a blade-holder parallel to the cutting edges and a rectilinear guide for a sliding block perpendicular to the first named guide, an abutment plate and a corresponding clamping plate forming a blade-holder for a two-edged razor blade, and a sliding block being adapted to move sideways in said guides, a handle perpendicular to the plane of blade-holder rigidly connected to said sliding block and means for transferring a movement of the sliding block in its guide to a movement of the blade-holder in its guide.

3. A safety razor comprising a protecting head provided with a rectilinear guide for a bladeholder parallel to the cutting edges and a rectilinear guide for a sliding block placed in a plane,

parallel to the plane of the first named guideand being perpendicular to this guide, an abutment plate and a corresponding clamping plate forming a blade-holder for a two-edged razor blade, and a V sliding block being adapted to move sideways in said guides, a handle rigidly connected to said sliding block and means for transferring a movement of the sliding block in its guide to a movement of the blade-holder in its guide.

4. A safety razor comprising a protecting head provided with a rectilinear guide .for a blade holder parallel to the cutting edges and a rectilinear guide for a sliding block perpendicular to the first named guide, an abutment plate and a corresponding clamping plate forming. abladeholder for a two-edged razor blade, and a sliding block being adapted to move sideways in said guides, a handle rigidly connected tosaid sliding block and a pin-and-rslot connection for transferring a movement of the sliding block in its guide to a movement'of the blade-holder in its'guide.

5. A safety razor comprising a protecting head provided with a rectilinear guide for a-blade holder parallel to the cutting edges and a rectilinear guide for a sliding block 'p'erpendicularto the first named guide, an abutment plate and a corresponding clamping plate forming abladeholder for a two-edged razor blade, and a sliding block being adapted to move sideways in said guides, a handle rigidly connected to said sliding blockrand a pin-slot bell-crank lever-connection for transferring a movement of the sliding block in its guide to a movement of theblade-holder in its guide.

6. A safety razor comprising a'protecting head provided with a rectilinear guide for a bladeholder parallel to the cutting edges and a rectilinear guide for a sliding block perpendicular to the first named guide, an abutment plate and a corresponding clamping plate forming a bladeholder for a two-edged razor blade, and a sliding block being adapted to move sideways in said guides, springs adapted to hold the sliding block, when free to move, in the. centre of its guide, a

handle rigidly connected to'said sliding block and means for transferring a movement of the sliding block in its guide to a movement of the bladeholder in its guide.

7. A safety razor comprising a protecting head provided with a rectilinear guide for a blade-holder parallel to the cutting edges and a rectilinear guide for a sliding block perpendicular to the first named guide, an abutment plate and a corre-.- sponding clamping plate forming 'ablade-holder for a two-edged razor blade, and a sliding block being adapted to move sideways in said guides, a handle rigidly connected to said sliding block and means for transferring a movement of the sliding block in its guide to a movement of the bladeholder in its guide, a nut rotatable in said'bladeholder, the clamping plate co-operating with said nut, a push-bar rotatable in said handle, adapted V to be coupled with said nut.

CARL CHRISTIAN LARSEN. 

